10665143

Display Systems with Compensation for Line Propagation Delay

PublishedMay 26, 2020
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Technical Abstract

Patent Claims
22 claims

Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.

Claim 1

Original Legal Text

1. A method of operating a display system, the method comprising: generating signals at a first location on a signal line of the display system with use of a pixel circuit coupled to said signal line; receiving the signals at a second location on the signal line; and determining a propagation delay effect on the signals as received at the second location with use of the received signals.

Plain English Translation

This invention relates to display systems, specifically addressing the challenge of accurately measuring signal propagation delays in display circuits. The method involves a pixel circuit generating signals at a first location on a signal line within the display system. These signals are then received at a second location along the same signal line. By analyzing the received signals, the system determines the propagation delay effect caused by the signal's journey between the two locations. This technique enables precise characterization of signal transmission characteristics, which is critical for optimizing display performance, particularly in large or high-resolution displays where signal integrity and timing are paramount. The method leverages the inherent properties of the display's signal lines to assess delays without requiring additional external measurement equipment, simplifying the calibration and diagnostic processes. The approach is particularly useful for identifying and compensating for variations in signal propagation due to factors like line length, material properties, or environmental conditions, ensuring consistent display quality.

Claim 2

Original Legal Text

2. The method of claim 1 further comprising: controlling the operation of the display system with use of the determined propagation delay effect.

Plain English Translation

A system and method for managing display systems in communication networks addresses the challenge of visual artifacts caused by propagation delays in distributed display environments. The invention involves determining the propagation delay effect between a central control unit and a remote display device, where the delay arises from signal transmission over a communication network. By measuring the time taken for signals to travel between the control unit and the display, the system calculates the propagation delay effect, which can introduce synchronization issues or visual distortions. The method further includes adjusting the operation of the display system based on the determined delay to mitigate these effects. This may involve compensating for timing discrepancies, adjusting refresh rates, or synchronizing multiple displays to ensure consistent visual output. The invention is particularly useful in applications requiring precise timing, such as video conferencing, gaming, or large-scale display networks, where minimizing latency and maintaining visual coherence are critical. The solution ensures that the display system operates smoothly despite network-induced delays, enhancing user experience and system reliability.

Claim 3

Original Legal Text

3. The method of claim 1 , wherein the signal line comprises a monitor line coupled to the pixel circuit at the first location and coupled to a monitor at the second location.

Plain English Translation

This invention relates to display technologies, specifically addressing the challenge of monitoring and maintaining the performance of pixel circuits in display panels. The method involves a signal line that facilitates the transmission of electrical signals between a pixel circuit and a monitoring system. The signal line includes a monitor line that is electrically connected to the pixel circuit at a first location and to a monitoring device at a second location. This configuration allows for real-time monitoring of the pixel circuit's electrical characteristics, such as voltage or current, to detect and correct potential issues like degradation or defects. The monitor line ensures accurate signal transmission, enabling precise diagnostics and calibration of the display panel. By integrating the monitor line into the signal line, the system can continuously assess pixel performance, improving display reliability and longevity. The method is particularly useful in high-resolution or large-area displays where maintaining uniform pixel performance is critical. The invention enhances display manufacturing and operational efficiency by providing a direct and efficient way to monitor pixel circuits without disrupting the display's normal operation.

Claim 4

Original Legal Text

4. The method of claim 3 , further comprising: controlling a monitoring of the pixel circuit to compensate for the propagation delay effect.

Plain English Translation

A method for compensating for propagation delay effects in pixel circuits, particularly in display or imaging systems, involves monitoring and adjusting the operation of the pixel circuit to mitigate delays caused by signal propagation. The pixel circuit includes a driving transistor and a light-emitting element, such as an OLED, where the driving transistor controls current flow to the light-emitting element. The method includes detecting variations in the propagation delay, which can arise from factors like temperature changes, voltage fluctuations, or manufacturing inconsistencies. By actively monitoring these delays, the system adjusts the timing or signal strength to ensure accurate and consistent pixel operation. This compensation prevents issues like brightness variations, color shifts, or response delays in the display or imaging device. The method may involve real-time adjustments or periodic calibrations to maintain performance over time. The technique is particularly useful in high-resolution or high-speed applications where propagation delays can significantly impact image quality. By dynamically compensating for these delays, the method ensures uniform and reliable pixel performance across the entire display or sensor array.

Claim 5

Original Legal Text

5. The method of claim 1 , wherein determining the propagation delay effect comprises determining a signal offset between the signals generated at the first location and the signals as received at the second location.

Plain English Translation

This invention relates to signal propagation delay measurement in communication systems. The problem addressed is accurately determining the time delay between signal transmission and reception to improve synchronization, timing, or positioning in wireless or wired networks. The method involves analyzing signals transmitted from a first location and received at a second location. The key step is calculating the propagation delay effect by measuring the signal offset between the transmitted and received signals. This offset represents the time difference caused by the physical distance and medium characteristics between the two locations. The technique may involve comparing timestamps, phase differences, or other signal characteristics to derive the delay. The method can be applied in various scenarios, such as time-of-flight measurements for distance estimation, network synchronization, or interference mitigation. By quantifying the delay, the system can compensate for propagation effects, ensuring accurate timing or positioning. The approach may also include preprocessing steps like filtering or noise reduction to enhance measurement precision. The technique is particularly useful in environments where signal propagation delays impact system performance, such as in wireless communication, radar, or satellite navigation.

Claim 6

Original Legal Text

6. The method of claim 1 , wherein determining the propagation delay effect comprises determining a gain factor between the signals generated at the first location and the signals as received at the second location.

Plain English Translation

This invention relates to signal propagation analysis in communication systems, specifically addressing the challenge of accurately determining propagation delay effects between two locations. The method involves measuring the difference in signal strength between transmitted signals at a first location and received signals at a second location to calculate a gain factor. This gain factor quantifies the attenuation or amplification of signals during transmission, which is used to assess the propagation delay effect. The technique may involve comparing signal characteristics such as amplitude, phase, or frequency to derive the gain factor. By analyzing this factor, the system can estimate how signal propagation conditions, such as distance, obstacles, or environmental factors, impact signal integrity. This method is particularly useful in wireless communication systems, radar applications, or any scenario where understanding signal degradation over distance is critical. The gain factor calculation helps optimize signal transmission, improve receiver sensitivity, and enhance overall system performance by accounting for real-world propagation effects. The invention provides a practical approach to characterizing signal behavior in dynamic environments, ensuring reliable communication and accurate data transmission.

Claim 7

Original Legal Text

7. The method of claim 1 , wherein said generating and receiving the signals and said determining the propagation delay effect are performed during an initial factory calibration of the display system.

Plain English Translation

A method for calibrating a display system to account for signal propagation delays during initial factory calibration. The display system includes multiple display panels, each with a local controller and a global controller. The method involves generating and receiving synchronization signals between the global controller and the local controllers to measure the propagation delay effects caused by signal transmission through the display system's communication channels. These delays are determined by analyzing the timing differences between the transmitted and received signals. The calibration process ensures that the display panels are synchronized, compensating for variations in signal propagation times across different communication paths. This reduces visual artifacts such as misalignment or flickering in the displayed content. The method is performed during factory calibration to establish accurate timing parameters before the display system is deployed. The technique is particularly useful in large-scale or high-resolution display systems where precise synchronization is critical for optimal performance.

Claim 8

Original Legal Text

8. The method of claim 1 , wherein said receiving the signals at the second location comprises receiving each of the signals at the second location with use of time periods of different durations.

Plain English Translation

This invention relates to signal processing systems, specifically methods for receiving and analyzing signals at multiple locations to improve accuracy or reliability. The problem addressed is the challenge of accurately capturing signals in environments where interference, noise, or varying signal strengths can degrade performance. The solution involves a method where signals are received at a first location and then transmitted to a second location for further processing. At the second location, the signals are received using time periods of different durations for each signal. This approach allows for adaptive sampling, where signals with higher noise levels or weaker strengths may be captured over longer time periods to improve signal integrity, while stronger signals can be sampled more quickly. The method may also involve preprocessing the signals at the first location before transmission, such as filtering or amplification, to enhance signal quality before analysis at the second location. The use of variable time periods at the second location ensures that each signal is processed optimally based on its characteristics, leading to more reliable data acquisition and analysis. This technique is particularly useful in applications like wireless communications, sensor networks, or industrial monitoring where signal conditions can vary significantly.

Claim 9

Original Legal Text

9. The method of claim 8 wherein at least one of the time periods of different durations is a function of a physical distance between the first location and the second location.

Plain English Translation

The invention relates to a method for optimizing data transmission between two locations based on their physical distance. The method involves adjusting the duration of time periods used for data transmission to account for variations in distance, thereby improving efficiency and reliability. Specifically, the method determines the physical distance between a first location and a second location and dynamically adjusts at least one of the time periods to a duration that is a function of this distance. This ensures that transmission parameters are tailored to the specific conditions of the communication link, reducing latency and enhancing performance. The method may also involve selecting a transmission mode from multiple available modes, such as a first mode for shorter distances and a second mode for longer distances, where each mode has distinct time period configurations. By dynamically adapting the time periods based on distance, the method optimizes data transfer efficiency while maintaining reliability across varying communication scenarios.

Claim 10

Original Legal Text

10. The method of claim 8 , wherein the time periods of different durations comprise at least a first time period of a duration sufficient to avoid settling effects and a second time period of a duration insufficient to avoid settling effects.

Plain English Translation

This invention relates to a method for analyzing a sample, particularly in a system where settling effects can interfere with accurate measurements. The method involves using time periods of different durations to distinguish between components of the sample that are affected by settling and those that are not. The first time period is long enough to allow settling effects to occur, while the second time period is too short for these effects to fully manifest. By comparing measurements taken during these different time periods, the system can isolate and analyze the components that are influenced by settling, improving the accuracy of the analysis. The method is particularly useful in systems where settling effects, such as particle sedimentation or fluid stratification, can distort measurement results. The technique ensures that the analysis accounts for these dynamic changes, providing more reliable data. The invention may be applied in various fields, including chemical analysis, environmental monitoring, and industrial process control, where settling effects are a known challenge. The method enhances the precision of measurements by systematically accounting for time-dependent variations in the sample.

Claim 11

Original Legal Text

11. The method of claim 10 further comprising: controlling the operation of the display system with use of the determined propagation delay effect.

Plain English Translation

This invention relates to display systems, specifically addressing the challenge of managing propagation delay effects in visual output. The method involves determining the propagation delay effect, which refers to the time delay introduced by the display system when processing and rendering visual data. This delay can cause misalignment or distortion in displayed content, particularly in dynamic or time-sensitive applications. The method further includes controlling the operation of the display system based on the determined propagation delay effect to mitigate these issues. This control may involve adjusting timing parameters, compensating for delays, or optimizing rendering processes to ensure accurate and synchronized visual output. The invention aims to improve the performance and reliability of display systems by accounting for inherent propagation delays, thereby enhancing user experience in applications requiring precise timing, such as gaming, virtual reality, or high-speed data visualization. The method may be applied to various display technologies, including LCD, OLED, or projection systems, to ensure consistent and delay-compensated visual performance.

Claim 12

Original Legal Text

12. A method of operating a display system, the method comprising: generating signals at a first location on a signal line of the display system; receiving the signals at a second location on the signal line with use of a pixel circuit coupled to said signal line; and determining a propagation delay effect on the signals as received at the second location with use of the received signals.

Plain English Translation

This invention relates to display systems, specifically addressing signal propagation delays in display circuits. The method involves generating signals at a first location on a signal line within the display system. These signals are then received at a second location on the same signal line by a pixel circuit connected to it. The received signals are analyzed to determine the propagation delay effect, which refers to the time delay experienced by the signals as they travel from the first location to the second location. This technique allows for the measurement and assessment of signal integrity and timing in display systems, which is critical for ensuring accurate and reliable display performance. The method may involve comparing the received signals to expected or reference signals to quantify the delay. The pixel circuit processes the received signals to extract timing information, which can be used to compensate for delays or optimize signal transmission. This approach is particularly useful in large-area displays or high-resolution systems where signal propagation delays can significantly impact image quality. By measuring and accounting for these delays, the display system can maintain consistent performance across different regions of the display.

Claim 13

Original Legal Text

13. The method of claim 12 further comprising: controlling the operation of the display system with use of the determined propagation delay effect.

Plain English Translation

A system and method for managing display systems in communication networks addresses the challenge of visual artifacts caused by propagation delays in distributed display environments. The invention involves determining the propagation delay effect between a central processing unit and a remote display unit, where the display unit receives and renders visual data transmitted over a network. The propagation delay effect is calculated based on the time taken for data to travel from the central unit to the display unit, accounting for network latency and processing delays. The system then adjusts the operation of the display system to compensate for this delay, ensuring synchronized and artifact-free visual output. This may include adjusting timing parameters, frame synchronization, or other display-related operations to mitigate the impact of propagation delays. The method is particularly useful in applications requiring real-time or high-fidelity visual rendering, such as remote collaboration, virtual reality, or distributed display networks. By dynamically compensating for propagation delays, the system enhances the quality and reliability of displayed content.

Claim 14

Original Legal Text

14. The method of claim 12 , wherein the signal line comprises a data line coupled to a data driver at the first location and coupled to the pixel circuit at the second location.

Plain English Translation

This invention relates to display technologies, specifically addressing signal transmission in display panels. The problem being solved involves efficiently routing and managing signal lines in display panels to reduce interference, improve signal integrity, and optimize space utilization. The invention describes a method for transmitting signals in a display panel where a signal line, such as a data line, is connected to a data driver at a first location and to a pixel circuit at a second location. The data line carries data signals from the data driver to the pixel circuit, enabling the display of images. The method ensures proper signal transmission by maintaining electrical connectivity between the driver and the pixel circuit while minimizing signal degradation. The data driver generates the necessary signals for pixel activation, and the data line acts as the conduit for these signals to reach the pixel circuit, which then controls the display elements. This approach improves display performance by ensuring reliable signal delivery and reducing potential issues like crosstalk or signal loss. The invention is particularly useful in high-resolution displays where precise signal routing is critical for maintaining image quality.

Claim 15

Original Legal Text

15. The method of claim 14 , further comprising: controlling a programming of the pixel circuit to compensate for the propagation delay effect.

Plain English Translation

The invention relates to display technologies, specifically addressing the issue of propagation delay in pixel circuits within display panels. Propagation delay occurs when signals take longer to reach certain pixels, leading to timing mismatches and display artifacts. This affects image quality, particularly in large or high-resolution displays where signal paths vary in length. The method involves dynamically adjusting the programming of pixel circuits to compensate for these delays. By analyzing the propagation delay effects, the system determines the necessary adjustments to ensure uniform timing across all pixels. This compensation can include modifying signal timing, adjusting voltage levels, or altering programming sequences to synchronize pixel updates. The method ensures that all pixels receive signals at the correct time, reducing visual distortions such as flickering or color inconsistencies. The invention builds on a broader method for driving a display panel, which includes generating control signals for pixel circuits and managing data transmission to minimize delays. The compensation step is integrated into this process, ensuring real-time adjustments based on detected propagation delays. This approach improves display performance, particularly in applications requiring high precision, such as professional monitors or medical imaging systems. The solution is applicable to various display technologies, including LCD, OLED, and microLED, where propagation delay is a critical factor.

Claim 16

Original Legal Text

16. The method of claim 12 , wherein determining the propagation delay effect comprises determining a signal offset between the signals generated at the first location and the signals as received at the second location.

Plain English Translation

This invention relates to signal propagation delay measurement in communication systems. The problem addressed is accurately determining the time delay between signal transmission and reception, which is critical for synchronization, positioning, and timing applications. The method involves analyzing signals generated at a first location and received at a second location to assess propagation delay effects. The technique determines the propagation delay by calculating a signal offset between the transmitted and received signals. This offset represents the time difference caused by the signal traveling through the medium between the two locations. The method may involve comparing phase, timing markers, or other signal characteristics to derive the offset. By quantifying this offset, the system can compensate for delays introduced by the communication channel, improving synchronization accuracy. The approach is particularly useful in wireless networks, satellite communications, and distributed sensor systems where precise timing is essential. By measuring the signal offset, the system can correct for propagation delays, ensuring accurate time alignment between nodes. This method enhances the reliability of time-sensitive applications, such as navigation, telemetry, and coordinated data transmission. The technique may also be applied in scenarios where environmental factors or signal path variations affect propagation speed, allowing for real-time adjustments to maintain synchronization.

Claim 17

Original Legal Text

17. The method of claim 12 , wherein determining the propagation delay effect comprises determining a gain factor between the signals generated at the first location and the signals as received at the second location.

Plain English Translation

This invention relates to signal propagation analysis in wireless communication systems, specifically addressing the challenge of accurately determining propagation delay effects between two locations. The method involves measuring signals generated at a first location and received at a second location to assess the impact of environmental factors on signal transmission. A key aspect is calculating a gain factor that quantifies the difference between the transmitted and received signals, accounting for attenuation, interference, and other propagation-related distortions. This gain factor helps estimate the propagation delay effect, which is critical for optimizing signal transmission, improving synchronization, and enhancing overall system performance. The technique may be applied in various wireless applications, including cellular networks, IoT devices, and radar systems, where understanding signal behavior over distance is essential. By analyzing the gain factor, the method provides a reliable way to model and compensate for propagation delays, ensuring more accurate and efficient communication. The approach may also integrate with other signal processing techniques to further refine delay estimation and mitigate errors caused by multipath effects or environmental changes.

Claim 18

Original Legal Text

18. The method of claim 12 , wherein said generating and receiving the signals and said determining the propagation delay effect are performed during an initial factory calibration of the display system.

Plain English Translation

A method for calibrating a display system to account for signal propagation delays during initial factory calibration. The display system includes multiple display panels, each with a timing controller and a data driver. The method involves generating and receiving synchronization signals between the timing controllers and data drivers to measure the propagation delay effect caused by signal transmission through interconnects. This delay measurement is used to adjust timing parameters within the display system to compensate for the delays, ensuring synchronized operation across the panels. The calibration process is performed during factory setup to optimize display performance before deployment. The method may also involve determining the propagation delay effect by analyzing the received synchronization signals and calculating the time difference between signal transmission and reception. This ensures accurate timing alignment in large-scale or multi-panel display systems, addressing issues like image distortion or artifacts caused by uncompensated propagation delays. The technique is particularly useful in high-resolution or high-refresh-rate displays where precise timing is critical.

Claim 19

Original Legal Text

19. The method of claim 12 , wherein said receiving the signals at the second location comprises receiving each of the signals at the second location with use of time periods of different durations.

Plain English Translation

This invention relates to signal processing systems, specifically methods for receiving and analyzing signals at multiple locations. The problem addressed is the need to improve signal reception accuracy and reliability when signals are received at different locations, particularly in environments where signal characteristics may vary due to distance, interference, or other factors. The method involves receiving signals at a first location and then receiving the same signals at a second location. At the second location, each signal is received using time periods of different durations. This approach allows for adaptive signal capture, where the duration of signal reception can be adjusted based on signal quality, environmental conditions, or other factors. By varying the time periods, the system can optimize signal detection, reduce noise interference, or compensate for signal degradation over distance. The method may also include processing the received signals to extract relevant information, such as timing data, frequency characteristics, or other signal properties. The use of different time periods for signal reception at the second location ensures that the system can adapt to changing conditions, improving overall signal analysis accuracy. This technique is particularly useful in applications such as wireless communication, radar systems, or any scenario where signals must be reliably captured at multiple points. The invention enhances signal reception robustness by dynamically adjusting reception parameters based on real-time conditions.

Claim 20

Original Legal Text

20. The method of claim 19 wherein at least one of the time periods of different durations is a function of a physical distance between the first location and the second location.

Plain English Translation

This invention relates to a method for optimizing data transmission or communication between two locations based on their physical distance. The method involves adjusting time periods of different durations for transmitting data or signals between a first location and a second location, where at least one of these time periods is determined as a function of the physical distance separating the two locations. The method may also include determining the physical distance between the locations, selecting or adjusting the time periods based on this distance, and transmitting data or signals according to the adjusted time periods. The time periods may correspond to intervals for data transmission, synchronization, or other communication-related operations. The method ensures efficient and reliable communication by dynamically adapting transmission parameters to the physical separation between the locations, which can improve performance in scenarios where distance affects signal propagation, latency, or synchronization requirements. This approach is particularly useful in wireless communication systems, sensor networks, or distributed computing environments where distance-based adjustments enhance communication efficiency and reliability.

Claim 21

Original Legal Text

21. The method of claim 19 , wherein the time periods of different durations comprise at least a first time period of a duration sufficient to avoid settling effects and a second time period of a duration insufficient to avoid settling effects.

Plain English Translation

This invention relates to a method for analyzing a sample, particularly in a system where settling effects can interfere with accurate measurements. The method involves using time periods of different durations to distinguish between components of the sample that are affected by settling and those that are not. The first time period is long enough to allow settling effects to occur, while the second time period is short enough to prevent these effects. By comparing measurements taken during these different time periods, the system can isolate and analyze the components of the sample that are influenced by settling, improving the accuracy of the analysis. The method may be applied in various analytical instruments, such as spectrometers or particle analyzers, where settling can distort results. The use of distinct time periods ensures that the analysis accounts for both settled and non-settled components, providing a more comprehensive understanding of the sample's properties. This approach enhances the reliability of measurements in systems where settling is a known issue.

Claim 22

Original Legal Text

22. The method of claim 21 further comprising: controlling the operation of the display system with use of the determined propagation delay effect.

Plain English Translation

A system and method for managing display systems in communication networks addresses the problem of visual artifacts caused by propagation delays in distributed display environments. The invention involves determining the propagation delay effect between a central processing unit and a remote display unit, where the display unit receives and renders visual data transmitted over a network. The propagation delay effect is calculated based on the time taken for data to travel from the central processing unit to the display unit, accounting for network latency, processing delays, and other factors that affect synchronization. Once the propagation delay effect is determined, the system adjusts the operation of the display system to compensate for these delays, ensuring synchronized and artifact-free visual output. This may include adjusting timing signals, frame rendering schedules, or other display parameters to mitigate the impact of propagation delays. The method ensures that multiple display units in a networked environment remain synchronized, improving visual quality and user experience in applications such as video conferencing, distributed gaming, or large-scale display systems. The invention is particularly useful in scenarios where low-latency and high-fidelity visual output are critical.

Patent Metadata

Filing Date

Unknown

Publication Date

May 26, 2020

Inventors

Gholamreza Chaji
Yaser Azizi

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